1. Establish a perfect selection mechanism: through strict selection procedures, select people with professional ethics to join the examiner team. The selection process can include interview, examination and comprehensive evaluation to ensure that the selected assessors have relevant knowledge and skills.

2. Providing professional training: providing systematic and comprehensive professional training for appraisers, including training in knowledge of laws and regulations, grading standards and skills, and professional ethics. The training content can be carried out by relevant professional institutions or organizations to ensure that appraisers can fully master the evaluation skills and professional quality.

3. Strengthen supervision and management: establish a scientific and strict examiner management mechanism, strengthen supervision and management of examiners, and ensure that they abide by professional ethics and grading standards. Supervision can be carried out through regular assessment, spot check and scoring, and complaint handling. , and correct and punish the appraisers who do not meet the requirements.